Answer:
Throughout the late 1940's and 1950's, MGM became the king of the movie musical. And this was largely due to the "Freed Unit." Freed's productions became so popular that the studio could afford to have a SECOND unit for musicals under the direction of Joe Pasternak.
Stippling is the drawing technique!
Answer: Its called an illusion. They practice the trick several times to perfect it to where people think it is magic.
Explanation: